Reuters reported that the Democratic senator from Massachusetts will soon endorse Clinton and has not ruled out serving as her vice president.

A source told Reuters the endorsement could come within a week or two. Sources also said that Warren wants to best help Democrats defeat Donald Trump in November and also advance issues such as income inequality that’s at the top of her agenda.

Clinton and Democrats supporting her campaign are attempting to cast Trump as a ruthless con artist who is tricking voters in the same way he duped prospective students into enrolling into his now-defunct Trump University, a business that offered real estate seminars.

It’s an argument Clinton and her aides believe will appeal not only to Democrats, but independent voters and even some Republicans worried about how Trump would manage the nation’s economy and foreign affairs.

While stopping short of calling Trump a racist for his recent comments about the federal judge overseeing a class-action lawsuit against Trump University, Clinton said her rival has a “very unfortunate and divisive tendency to attack all kind of Americans.”

“It’s classic behavior by a demagogue,” she said in a telephone interview with The Associated Press. “We’ve seen it many, many places and times in the world, and that’s why I think it’s so dangerous.”